Method of transmitting radio access capability in a wireless communications system and related communication device

Description

[0001] The present invention relates to a apparatus and method for transmitting radio access capability associated with a long term evolution (LTE) system in a Global system for mobile communication (GSM) wireless communication system according to the pre-characterizing clauses of claims 1 and 10.

[0002] US Patent Publication No. 2007/0224990 A1 discloses a method of reporting capability information in a GSM system for a user equipment (UE). The UE sends a MS Classmark 3 information information element (IE) with a new capability indicator set to indicate that the UE has new or additional capability information that is not transferable in the MS Classmark 3 information IE. The network may receive the new capability indicator and may send a request or an indication to request for the new capability information from the UE. The UE may thereafter send the new capability information to the network in a new information element in a message.

[0003] US Patent Publication No. 2005/0075074 A1 discloses a method of reporting GSM capability information in a Universal Mobile Telecommunications System (UMTS) system for a UE. A single/dual receiver capabilities of a subscriber unit (e.g. a receiver of the UE) can for GSM be obtained from the standardized UE CAPABILITY message reported as part of the UTRAN CLASSMARK CHANGE message, while in UMTS this is contained in the UE CAPABILITY INFORMATION message.

[0004] US Patent Publication No. 2005/0271008 A1 discloses a method of reporting GSM capability information to a Wireless Local Area Network (WLAN) system for a mobile station (MS). Classmark messages are used to enable a UNC (UMA Network Controller) to gain information about an MS' capabilities, where UMA is Unlicensed Mobile Access. A classmark interrogation procedure may be initiated when the MS has established a dedicated connection, i.e. the MS si in URR (UMA Radio Resource) DEDICATED mode. The UNC initiate the classmark interrogation procedure by sending a URR CLASSMARK ENQUIRT message to the MS. In response, the MS returns a URR CLASSMARK
A standard publication (3GPP Standard; 3GPP TS 25.331, 20080901 3rd Generation Partnership Project (3GPP), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France) and a standard publication 3GPP Draft; S2-083717, 20080502 3rd Generation Partnership Project (3GPP), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France discuss useful information in order to understand the invention. CHANGE message.

[0005] GSM is a globally accepted second generation (2G) standard for digital cellular communication. A GSM network includes a switching system (SS), a base station system (BSS), and an operation and support system (OSS). A mobile switching center, part of the SS, performs the telephony switching functions of the system, e.g. an inter-RAT (Radio Access Technology) handover. The BSS handles a radio interface to a mobile station (MS) and provides physical links and related control functions with the MSC.

[0006] With evolution of the telecommunication system, a long term evolution system is developed as an evolved third generation (3G) standard to provide a high data rate, low latency, packet optimization, and improved system capacity and coverage. In the LTE system, an evolved universal terrestrial radio access network (E-UTRAN) includes a plurality of evolved Node-Bs (eNBs) and communicates with a plurality of user equipments (UEs).

[0007] Due to demand for a multi-mode device, the MS can support the LTE system in addition to the GSM system, and is stored with capability information of each supported system. The capability information mainly associates with abilities of link establishment, measurement, frequency tuning, etc. When the MS operates in the GSM system, the GSM network can initiate an inter-RAT to the E-UTRAN for the MS. The GSM network and the E-UTRAN need to know how much EUTRA capability (the capability associates with the LTE system) the MS has, so as to generate a handover message for configuring the MS during the inter-RAT With handover configuration appropriately set based on the EUTRA capability information, the MS is able to successfully connect the E-UTRAN; otherwise the inter-RAT is failed.

[0008] However, the prior art does not provide a way for the MS in the GSM system to transmit the EUTRA capability information to the GSM network responsible for transferring the MS capabilities to the E-UTRAN. Without the EUTRA capability information, the GSM network cannot arrange Inter-RAT handover to EUTRAN for the UE. Then the UE cannot get higher-QoS (Quality of Service) service provided by the E-UTRAN even if the UE is under EUTRAN coverage.

[0009] This in mind, the present invention aims at providing a method and apparatus for transmitting radio access capability associated with the LTE system in a GSM wireless communication system.

[0010] This is achieved by a apparatus and method for transmitting capability information related to an LTE wireless communications system in a GSM wireless communications system according to claims 1 and 10. The dependent claims pertain to corresponding further developments and improvements.

[0011] As will be seen more clearly from the detailed description following below, the claimed communication device for transmitting radio access capability in a GSM wireless communication system includes means for including capability information of the communication device in a radio resource message, and means for autonomously sending the radio resource message to a network of the GSM wireless communication system when long term evolution, LTE, wireless communication system capability of the mobile device changes, wherein the capability information of the communication devic corresponds to a LTE wireless communication system.

Brief Description of the Drawings

[0012] 

Fig. 1 is a schematic diagram of a wireless communication system.

Fig. 2 is a schematic diagram of a communication device according to an example of the present invention.

Fig. 3 is a schematic diagram of the program code for the GSM system according to an example of the present invention.

Fig. 4 is a flowchart of a process according to an example of the present invention.

Fig. 5 is a schematic diagram of radio resource message content according to an example of the present invention.

Fig. 6 is a schematic diagram of information element content according to an example of the present invention.

[0013] Please refer to Fig. 1, which illustrates a schematic diagram of a wireless communication system 10 according to an example of the present invention. Briefly, the wireless communication system 10 includes a network and a plurality of mobile devices. In Fig. 1, the network and the mobile devices are simply utilized for illustrating the structure of the wireless communication system 10. The wireless communication system 10 may be a second generation (2G) wireless communication system, e.g. Global System for Mobile (GSM) communications system. In the GSM system, the network is referred as a GERAN (GSM/EDEG Radio Access Network) comprising a plurality of base stations, whereas the mobile devices are referred as mobile stations (MSs). The MSs can be devices such as mobile phones, computer systems, etc. Besides, the network and the MS can be seen as a transmitter or receiver according to transmission direction, e.g., for uplink (UL), the MS is the transmitter and the network is the receiver, and for downlink (DL), the network is the transmitter and the MS is the receiver.

[0014] Please refer to Fig. 2, which illustrates a schematic diagram of a communication device 20 according to an example of the present invention. The communication device 20 can be the mobile devices shown in Fig. 1 and includes a processor 200, a computer readable recording medium 210 and a communication interfacing unit 220. The computer readable recording medium 210 is any data storage device that includes program code 214 and capability information 216, thereafter read and processed by the processor 200. Examples of the computer readable recording medium 210 include a subscriber identity module (SIM), read-only memory (ROM), random-access memory (RAM), CD-ROMs, magnetic tapes, hard disks, optical data storage devices, and carrier waves (such as data transmission through the Internet). The communication interfacing unit 220 is preferably a radio transceiver and accordingly exchanges wireless signals with the network. The capability information 216 reveals operating capability of the communication device 20 for an evolved third generation (3G) wireless communication system, e.g. a long term evolution (LTE) system.

[0015] Please refer to Fig. 3, which illustrates a schematic diagram of the program code 214 for the GSM system according to an example of the present invention. The program code 214 includes program code of multiple communications protocol layers, which from top to bottom is program code of a Layer 1 310, a Layer 2 320 and a Layer 3 330. The Layer 1 310 is a physical layer, which can cooperate with the communication interfacing unit 220 to use the air interface channels. The Layer 2 320 is a data-link layer, a link access protocol on the Dm channel (LAP-Dm), for realizing a radio link between the MS and the network. The Layer 3 330 includes a RR (Radio Resource) management sublayer utilizing RR massages and information elements (lEs) to transmit signaling information, e.g. handover information and RAT capability information, for managing the radio/physical link.

[0016] Please refer to Fig. 4, which illustrates a flowchart of a process 40 according to an example of the present invention. The process 40 is utilized for transmitting radio access capability for a MS in a 2G wireless communication system. The process 40 can be compiled into the program code 214 and includes the following steps:

Step 400:

Start.

Step 410:

Include capability information of the MS, corresponding to an evolved 3G wireless communication system, in a radio resource message.

Step 420:

Send the radio resource message to a network of the 2G wireless communication system.

Step 420:

End.

[0017] According to the process 40, the MS includes the evolved 3G capability information (e.g. the capability information 216) in the radio resource message and informs the capability to the 2G network by sending the radio resource message. The capability information is preferably interpretable by a radio resource control (RRC) layer of the evolved third generation wireless communication system. Furthermore, the MS can re-send the radio resource message to the 2G network when the evolved 3G capability changes. Through the process 40, the 2G network with the evolved 3G capability information is able to accurately prepare an inter-RAT (Radio Access Technology) handover to the evolved 3G system so that the MS can access better services from the evolved 3G network. For example, the 2G network transfers the evolved 3G capability information of the MS to the target evolved 3G network before the inter-RAT handover, and according to the evolved 3G capability information, the target 3G network can thereby generate an appropriately-configured handover message.

[0018] Please note that the abovementioned steps including suggested steps can be realized by means that could be hardware, firmware known as a combination of a hardware device and computer instructions and data that reside as read-only software on the hardware device, or an electronic system. Examples of hardware can include analog, digital and mixed circuits known as microcircuit, microchip, or silicon chip. Examples of the electronic system can include system on chip (SOC), system in package (Sip), computer on module (COM), and the communication device 20 in which the processor 200 processes the program code 214 related to the process 40 and the processed results transfer the communication device 20 to a state of being able to successfully access the target wireless communication that has obtained sufficient capability information from the communication device 20.

[0019] For a MS supporting GSM and LTE systems, the GSM RR (Radio Resource) message is a transfer means for EUTRA (Evolved UMTS Terrestrial Radio Access) capability information. Please refer to Fig. 5, which is a schematic diagram of message content of the GSM RR message. The radio resource message includes "RR management protocol discriminator", "skip indicator", "EUTRAN Classmark Change message type", and "EUTRAN Classmark" IEs. An IEI (Information Element Idenitifier) field is used for identifying the abovementioned IEs and each can be set to predetermined values known by both the ME and the 2G network. The "skip indicator" IE represented by 4 bits is utilized to encode an identification data value corresponding to a target E-UTRAN (Evolved UMTS Terrestrial Radio Access Network). The skip indicator different from 0000 indicates that the radio resource message shall be ignored. The skip indicator IE encoded as 0000 indicates that the radio resource message shall not be ignored. The "RR management protocol discriminator" IE is utilized to identify the Layer 3 protocol to which the RR message belongs. The correspondence between L3 protocols and protocol discriminators is one-to-one. The message type is utilized to identify the purpose and structure of the RR message. The "EUTRAN Classmark Change message type" IE includes a predetermined value identifiable by GSM network. The predetermined value can be "01100110". The "EUTRAN Classmark" IE includes EUTRA capability information.

[0020] Please refer to Fig. 6, which is a schematic diagram of content of the "EUTRAN Classmark" IE. The "EUTRAN Classmark" IE includes an IEI field, a length field and a value part. The length field is represented by an octet. The value part of the "EUTRAN Classmark" IE is EUTRA capability information.

[0021] The EUTRA capability information can include at least one of an access stratum release parameter, a UE (User Equipment) category parameter, packet data convergence protocol (Packet Data Convergence Protocol) parameters, physical layer parameters, radio frequency (RF) parameters and measurement parameters. The access stratum release parameter relates to a release of Layers 1, 2, and 3. The UE category parameter is used to define a combined uplink and downlink capability, such as maximum numbers of a downlink/uplink transport block bits received within a TTI (transmission time interval), and a total buffer size of the Layer 2. The physical layer parameter relates to configuration of uplink closed-loop antenna selection transmit diversity and downlink reference signals. The RF parameter defines which E-UTRA radio frequency bands are supported by the MS. The measurement parameter defines for each supported E-UTRA band whether measurement gaps are required to perform measurements on each other supported E-UTRA radio frequency band and on each supported band combination.

[0022] Alternatively, the EUTRA capability information is essentially generated based on a "UE-EUTRA-Capability" IE used in a RRC layer of the LTE system, where interRAT parameters of the EUTRA capability information are optional. The GSM RR message can directly include the EUTRA capability information without the "EUTRAN Classmark" IE.

[0023] The MS can send the radio resource message to the 2G network through an early classmark sending procedure. In the early classmark sending procedure, the MS sends the radio resource message including the evolved 3G capability to the 2G network if the 2G network indicates in system information supporting early classmark sending. Besides, the 2G network can ask for capability of the MS by sending a CLASSMARK ENQUIRY message including a "Classmark Enquiry Mask" IE whose 5th to 7th bits have a predetermined value of "001" or a predetermined value other than "000" and "111". The "000" and "111" values associates with a UMTS system classmark change. The MS sends the radio resource message including the evolved 3G capability to the 2G network in respond to the CLASSMARK ENQUIRY message.

[0024] In conclusion, the examples of the present invention mainly provide the method/means for transferring device capability associated with a wireless system to another wireless system, particularly for transmitting the evolved 3G capability to the 2G network by a RR message of the 2G RAT so that the 2G network can appropriately prepare an inter-RAT handover to the evolved 3G system based on the received evolved 3G capability.

Claims

1. A communication device (20), comprising:

means for transmitting radio access capability for use in a global system for mobile communications, GSM, wireless communication system;

means for including capability information (216) of the communication device in a radio resource message of the radio access capability for the GSM wireless communication system; characterized by

means for autonomously informing the capability information to the GSM wireless communication system by sending the radio resource message to a network of the GSM wireless communication system when long term evolution, LTE, wireless communication system capability of the communication device changes, wherein

the capability information (216) of the communication device corresponds to a LTE wireless communication system;

wherein the capability information (216) includes a user equipment evolved universal terrestrial radio access, UE EUTRA, capability used in a radio resource control layer of the LTE wireless communication system and

means for autonomously re-sending the radio resource message to the network when capability of the communication device corresponding to the LTE wireless communication system changes.

2. The communication device of claim 1, wherein the capability information further comprises inter ratio access technology parameters.

3. The communication device (20) of claim 1, characterized in that the capability information (216) includes at least one of a parameter for an access stratum release, a category parameter, parameters of a packet data convergence protocol, parameters of a physical layer, radio frequency parameters and measurement parameters.

4. The communication device (20) of claim 1, characterized in that the radio resource message includes a protocol discriminator information element, a skip indicator information element, a classmark change message type information element related to the LTE wireless communication system, and a classmark information element related to the LTE wireless communication system, wherein the classmark information element includes at least one of a parameter for an access stratum release, a category parameter, parameters of a packet data convergence protocol, parameters of a physical layer, radio frequency parameters and measurement parameters.

5. The communication device (20) of claim 3, characterized in that the classmark change message type information element has a predetermined value of "01100110".

6. The communication device (20) of claim 1, characterized in that the means for autonomously sending the radio resource message to the network of the GSM wireless communication system when the LTE wireless communication system capability of the mobile device changes comprises means for autonomously sending the radio resource message to the network of the GSM wireless communication system when the LTE wireless communication system capability of the communication device (20) changes through an early classmark sending procedure.

7. The communication device (20) of claim 7, characterized in that the means for autonomously sending the radio resource message to the network of the GSM wireless communication system when the LTE wireless communication system capability of the communication device (20) changes through an early class mark sending procedure receives a CLASSMARK ENQUIRY message of the early classmark sending procedure and sends the radio resource message to the network in respond to the CLASSMARK ENQUIRY message.

8. The communication device (20) of claim 1, characterized in that the CLASSMARK ENQUIRY message includes a Classmark Enquiry Mask information element whose fifth to seventh bits have a predetermined value of "001" or a predetermined value other than "000" and "111".

9. A mobile phone, comprising the communication device according to any preceding claims.

10. A method, comprising:

transmitting, by a communication device, radio access capability for use in a global system for mobile communications, GSM, wireless communication system, including, by the communication device, capability information (216) of the communication device in a radio resource message of the radio access capability for the GSM wireless communication system; characterized by:

autonomously informing, by the communication device, the capability information to the GSM wireless communication system by sending the radio resource message to a network of the GSM wireless communication system when long term evolution, LTE, wireless communication system capability of the communication device changes, wherein the capability information (216) of the communication device corresponds to a LTE wireless communication system;

wherein the capability information (216) includes a user equipment evolved universal terrestrial radio access, UE EUTRA, capability used in a radio resource control layer of the LTE wireless communication system and

autonomously re-sending, by the communication device, the radio resource message to the network when capability of the communication device corresponding to the LTE wireless communication system changes.

11. A computer program, comprising computer readable instructions (214), wherein the instructions are configured to cause a computer to perform each of the steps of the method of claim 10 when executed.

Ansprüche

1. Eine Kommunikationsvorrichtung (20), die Folgendes beinhaltet:

ein Mittel zum Übertragen von Funkzugangsfähigkeit zur Verwendung in einem drahtlosen Kommunikationssystem des globalen Systems für mobile Kommunikation (GSM);

ein Mittel zum Einschließen von Fähigkeitsinformationen (216) der Kommunikationsvorrichtung in einer Funkressourcennachricht der Funkzugangsfähigkeit für das drahtlose GSM-Kommunikationssystem; gekennzeichnet durch

ein Mittel zum autonomen Informieren des drahtlosen GSM-Kommunikationssystems über die Fähigkeitsinformationen durch Senden der Funkressourcennachricht an ein Netz des drahtlosen GSM-Kommunikationssystems, wenn sich die Fähigkeit für das drahtlose Long-Term-Evolution(LTE)-Kommunikationssystem der Kommunikationsvorrichtung ändert, wobei die Fähigkeitsinformationen (216) der Kommunikationsvorrichtung einem drahtlosen LTE-Kommunikationssystem entsprechen;

wobei die Fähigkeitsinformationen (216) eine Fähigkeit der Endgeräte für weiterentwickelten universellen terrestrischen Funkzugang (UE-EUTRA, user equipment evolved universal terrestrial radio access) einschließen, die in einer Funkressourcensteuerungsschicht des drahtlosen LTE-Kommunikationssystems verwendet wird, und

ein Mittel zum autonomen erneuten Senden der Funkressourcennachricht an das Netz, wenn sich die Fähigkeit der Kommunikationsvorrichtung, die dem drahtlosen LTE-Kommunikationssystem entspricht, ändert.

2. Kommunikationsvorrichtung gemäß Anspruch 1, wobei die Fähigkeitsinformationen ferner Interfunk-Zugangstechnologieparameter beinhalten.

3. Kommunikationsvorrichtung (20) gemäß Anspruch 1, dadurch gekennzeichnet, dass die Fähigkeitsinformationen (216) mindestens einen von einem Parameter für eine Access-Stratum-Freigabe, einem Kategorieparameter, Parametern eines Paketdatenkonvergenzprotokolls, Parametern einer physikalischen Schicht, Funkfrequenzparametern und Messparametern einschließen.

4. Kommunikationsvorrichtung (20) gemäß Anspruch 1, dadurch gekennzeichnet, dass die Funkressourcennachricht ein Protokolldiskriminator-Informationselement, ein Überspringindikator-Informationselement, ein Informationselement des Typs Klassenkennungswechselnachricht (Classmark-change-Nachricht) in Bezug auf das drahtlose LTE-Kommunikationssystem und ein Klassenkennungsinformationselement in Bezug auf das drahtlose LTE-Kommunikationssystem einschließt, wobei das Klassenkennungsinformationselement mindestens einen von einem Parameter für eine Access-Stratum-Freigabe, einen Kategorieparameter, Parametern eines Paketdatenkonvergenzprotokolls, Parametern einer physikalischen Schicht, Funkfrequenzparametern und Messparametern einschließt.

5. Kommunikationsvorrichtung (20) gemäß Anspruch 3, dadurch gekennzeichnet, dass das Informationselement des Typs Klassenkennungswechselnachricht einen vorbestimmten Wert von "01100110" aufweist.

6. Kommunikationsvorrichtung (20) gemäß Anspruch 1, dadurch gekennzeichnet, dass das Mittel zum autonomen Senden der Funkressourcennachricht an das Netz des drahtlosen GSM-Kommunikationssystems, wenn sich die Fähigkeit des drahtlosen LTE-Kommunikationssystems der mobilen Vorrichtung ändert, ein Mittel zum autonomen Senden der Funkressourcennachricht an das Netz des drahtlosen GSM-Kommunikationssystems, wenn sich die Fähigkeit des drahtlosen LTE-Kommunikationssystems der Kommunikationsvorrichtung (20) ändert, durch ein frühes Klassenkennungssendeverfahren beinhaltet.

7. Kommunikationsvorrichtung (20) gemäß Anspruch 7, dadurch gekennzeichnet, dass das Mittel zum autonomen Senden der Funkressourcennachricht an das Netz des drahtlosen GSM-Kommunikationssystems, wenn sich die Fähigkeit des drahtlosen LTE-Kommunikationssystems der Kommunikationsvorrichtung (20) ändert, durch ein frühes Klassenkennungssendeverfahren von dem frühen Klassenkennungssendeverfahren eine CLASSMARK-ENQUIRY-Nachricht erhält und die Funkressourcennachricht als Antwort auf die CLASSMARK-ENQUIRY-Nachricht an das Netz sendet.

8. Kommunikationsvorrichtung (20) gemäß Anspruch 1, dadurch gekennzeichnet, dass die CLASSMARK-ENQUIRY-Nachricht ein Classmark-Enquiry-Mask-Informationselement einschließt, dessen fünftes bis siebtes Bit einen vorbestimmten Wert von "001" oder einen vorbestimmten Wert, der nicht "000" und "111" ist, aufweisen.

9. Ein Mobiltelefon, das die Kommunikationsvorrichtung gemäß einem der vorhergehenden Ansprüche beinhaltet.

10. Ein Verfahren, das Folgendes beinhaltet:

Übertragen, durch eine Kommunikationsvorrichtung, von Funkzugangsfähigkeit zur Verwendung in einem drahtlosen Kommunikationssystem des globalen Systems für mobile Kommunikation (GSM),

Einschließen, durch die Kommunikationsvorrichtung, von Fähigkeitsinformationen (216) der Kommunikationsvorrichtung in einer Funkressourcennachricht der Funkzugangsfähigkeit für das drahtlose GSM-Kommunikationssystem; gekennzeichnet durch:

autonomes Informieren, durch die Kommunikationsvorrichtung, des drahtlosen GSM-Kommunikationssystems über die Fähigkeitsinformationen durch Senden der Funkressourcennachricht an ein Netz des drahtlosen GSM-Kommunikationssystems,

wenn sich die Fähigkeit des drahtlosen Long-Term-Evolution(LTE)-Kommunikationssystems der Kommunikationsvorrichtung ändert, wobei die Fähigkeitsinformationen (216) der Kommunikationsvorrichtung einem drahtlosen LTE-Kommunikationssystem entsprechen;

wobei die Fähigkeitsinformationen (216) eine Fähigkeit der Endgeräte für weiterentwickelten universellen terrestrischen Funkzugang (UE-EUTRA) einschließen,

die in einer Funkressourcensteuerungsschicht des drahtlosen LTE-Kommunikationssystems verwendet wird, und

autonomes erneutes Senden, durch die Kommunikationsvorrichtung, der Funkressourcennachricht an das Netz, wenn sich die Fähigkeit der Kommunikationsvorrichtung, die dem drahtlosen LTE-Kommunikationssystem entspricht, ändert.

11. Ein Computerprogramm, das computerlesbare Anweisungen (214) beinhaltet, wobei die Anweisungen konfiguriert sind, um einen Computer dazu zu veranlassen, jeden der Schritte des Verfahrens gemäß Anspruch 10 durchzuführen, wenn ausgeführt.

Revendications

1. Un dispositif de communication (20), comprenant :

un moyen pour transmettre une capacité d'accès radio destinée à être utilisée dans un système de communication sans fil de système mondial de communication avec les mobiles, GSM ;

un moyen pour inclure une information de capacité (216) du dispositif de communication dans un message de ressource radio de la capacité d'accès radio pour le système de communication sans fil GSM ; caractérisé par un moyen pour informer de façon autonome le système de communication sans fil GSM de l'information de capacité en envoyant le message de ressource radio à un réseau du système de communication sans fil GSM lorsqu'une capacité de système de communication sans fil à évolution à long terme, LTE, du dispositif de communication change, l'information de capacité (216) du dispositif de communication correspondant à un système de communication sans fil LTE ;

dans lequel l'information de capacité (216) inclut une capacité d'accès radio terrestre universel évolué d'équipement utilisateur, UE EUTRA, utilisée dans une couche de contrôle de ressource radio du système de communication sans fil LTE et

un moyen pour renvoyer de façon autonome le message de ressource radio au réseau lorsqu'une capacité du dispositif de communication correspondant au système de communication sans fil LTE change.

2. Le dispositif de communication de la revendication 1, dans lequel l'information de capacité comprend en outre des paramètres d'inter-technologie d'accès radio.

3. Le dispositif de communication (20) de la revendication 1, caractérisé en ce que l'information de capacité (216) inclut au moins un paramètre parmi un paramètre pour une libération de strate d'accès, un paramètre de catégorie, des paramètres d'un protocole de convergence de données de paquet, des paramètres d'une couche physique, des paramètres de fréquence radio et des paramètres de mesure.

4. Le dispositif de communication (20) de la revendication 1, caractérisé en ce que le message de ressource radio inclut un élément d'information discriminateur de protocole, un élément d'information indicateur de saut, un élément d'information de type message de changement d'indice classificateur lié au système de communication sans fil LTE, et un élément d'information d'indice classificateur lié au système de communication sans fil LTE, dans lequel l'élément d'information d'indice classificateur inclut au moins un paramètre parmi un paramètre pour une libération de strate d'accès, un paramètre de catégorie, des paramètres d'un protocole de convergence de données de paquet, des paramètres d'une couche physique, des paramètres de fréquence radio et des paramètres de mesure.

5. Le dispositif de communication (20) de la revendication 3, caractérisé en ce que l'élément d'information de type message de changement d'indice classificateur a une valeur prédéterminée de « 01100110 ».

6. Le dispositif de communication (20) de la revendication 1, caractérisé en ce que le moyen pour envoyer de façon autonome le message de ressource radio au réseau du système de communication sans fil GSM lorsque la capacité de système de communication sans fil LTE du dispositif mobile change comprend un moyen pour envoyer de façon autonome le message de ressource radio au réseau du système de communication sans fil GSM lorsque la capacité de système de communication sans fil LTE du dispositif de communication (20) change via une procédure d'envoi d'indice classificateur précoce.

7. Le dispositif de communication (20) de la revendication 7, caractérisé en ce que le moyen pour envoyer de façon autonome le message de ressource radio au réseau du système de communication sans fil GSM lorsque la capacité de système de communication sans fil LTE du dispositif de communication (20) change via une procédure d'envoi d'indice classificateur précoce reçoit un message DEMANDE D'INDICE CLASSIFICATEUR de la procédure d'envoi d'indice classificateur précoce et envoie le message de ressource radio au réseau en réponse au message DEMANDE D'INDICE CLASSIFICATEUR.

8. Le dispositif de communication (20) de la revendication 1, caractérisé en ce que le message DEMANDE D'INDICE CLASSIFICATEUR inclut un élément d'information de masque de demande d'indice classificateur dont les cinquièmes à septièmes bits ont une valeur prédéterminée de « 001 » ou une valeur prédéterminée autre que « 000 » et « 111 ».

9. Un téléphone mobile, comprenant le dispositif de communication selon n'importe quelles revendications précédentes.

10. Une méthode, comprenant :

la transmission, par un dispositif de communication, d'une capacité d'accès radio destinée à être utilisée dans un système de communication sans fil de système mondial de communication avec les mobiles, GSM,

l'inclusion, par le dispositif de communication, d'une information de capacité (216) du dispositif de communication dans un message de ressource radio de la capacité d'accès radio pour le système de communication sans fil GSM ; caractérisé par :

l'information de façon autonome, par le dispositif de communication, du système de communication sans fil GSM d'une information de capacité en envoyant le message de ressource radio à un réseau du système de communication sans fil GSM lorsqu'une capacité de système de communication sans fil à évolution à long terme, LTE, du dispositif de communication change, l'information de capacité (216) du dispositif de communication correspondant à un système de communication sans fil LTE ;

dans laquelle l'information de capacité (216) inclut une capacité d'accès radio terrestre universel évolué d'équipement utilisateur, UE EUTRA, utilisée dans une couche de contrôle de ressource radio du système de communication sans fil LTE et

le renvoi de façon autonome, par le dispositif de communication, du message de ressource radio au réseau lorsqu'une capacité du dispositif de communication correspondant au système de communication sans fil LTE change.

11. Un programme informatique, comprenant des instructions lisibles par un ordinateur (214), les instructions étant configurées pour amener un ordinateur à effectuer chacune des étapes de la méthode de la revendication 10 lorsqu'elle est exécutée.

Drawing